ABAP Select data from SAP table TDS_RFC_HEAD_COMC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TDS_RFC_HEAD_COMC table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to TDS_RFC_HEAD_COMC. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the TDS_RFC_HEAD_COMC table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_TDS_RFC_HEAD_COMC TYPE STANDARD TABLE OF TDS_RFC_HEAD_COMC,
      WA_TDS_RFC_HEAD_COMC TYPE TDS_RFC_HEAD_COMC,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <TDS_RFC_HEAD_COMC> TYPE TDS_RFC_HEAD_COMC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TDS_RFC_HEAD_COMC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TDS_RFC_HEAD_COMC
  INTO TABLE IT_TDS_RFC_HEAD_COMC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_RFC_HEAD_COMC
*  INTO TABLE @DATA(IT_TDS_RFC_HEAD_COMC2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_TDS_RFC_HEAD_COMC INDEX 1 INTO DATA(WA_TDS_RFC_HEAD_COMC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TDS_RFC_HEAD_COMC ASSIGNING <TDS_RFC_HEAD_COMC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_RFC_HEAD_COMC>-HANDLE = 1.
<TDS_RFC_HEAD_COMC>-AUART = 1.
<TDS_RFC_HEAD_COMC>-VKORG = 1.
<TDS_RFC_HEAD_COMC>-VTWEG = 1.
<TDS_RFC_HEAD_COMC>-SPART = 1.

ENDLOOP.

LOOP AT IT_TDS_RFC_HEAD_COMC INTO WA_TDS_RFC_HEAD_COMC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_RFC_HEAD_COMC-VKBUR, sy-vline,
  WA_TDS_RFC_HEAD_COMC-VKGRP, sy-vline,
  WA_TDS_RFC_HEAD_COMC-VBELN, sy-vline,
  WA_TDS_RFC_HEAD_COMC-KUNAG, sy-vline,
  WA_TDS_RFC_HEAD_COMC-KUNWE, sy-vline,
  WA_TDS_RFC_HEAD_COMC-BSTKD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_RFC_HEAD_COMC you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_TDS_RFC_HEAD_COMC TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_TDS_RFC_HEAD_COMC INTO WA_TDS_RFC_HEAD_COMC.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TDS_RFC_HEAD_COMC_STR, 
HANDLE TYPE STRING,
AUART TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
VBELN TYPE STRING,
KUNAG TYPE STRING,
KUNWE TYPE STRING,
BSTKD TYPE STRING,
BSTDK TYPE STRING,
VDATU TYPE STRING,
KETDAT TYPE STRING,
KPRGBZ TYPE STRING,
DWERK TYPE STRING,
AUGRU TYPE STRING,
LIFSK TYPE STRING,
FAKSK TYPE STRING,
PRSDT TYPE STRING,
WAERK TYPE STRING,
KURSK_INT TYPE STRING,
KURSK_EXT TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
FKDAT TYPE STRING,
ZTERM TYPE STRING,
AUTLF TYPE STRING,
AUDAT TYPE STRING,
ANGDT TYPE STRING,
BNDDT TYPE STRING,
GUEBG TYPE STRING,
GUEEN TYPE STRING,
VSBED TYPE STRING,
ZLSCH TYPE STRING,
DELCO TYPE STRING,
VBEGDAT TYPE STRING,
VENDDAT TYPE STRING,
VBEGREG TYPE STRING,
VENDREG TYPE STRING,
KTEXT TYPE STRING,
PLTYP TYPE STRING,
KONDA TYPE STRING,
BZIRK TYPE STRING,
KDGRP TYPE STRING,
BSARK TYPE STRING,
VSART TYPE STRING,
ABLAD TYPE STRING,
EMPST TYPE STRING,
CPD_NAME TYPE STRING,
CPD_STREET TYPE STRING,
CPD_HNUM TYPE STRING,
CPD_PCODE TYPE STRING,
CPD_CITY TYPE STRING,
CPD_COUNTRY TYPE STRING,
CPD_LANGU_INT TYPE STRING,
CPD_LANGU_EXT TYPE STRING,
KVGR1 TYPE STRING,
KVGR2 TYPE STRING,
KVGR3 TYPE STRING,
KVGR4 TYPE STRING,
KVGR5 TYPE STRING,
KDKG1 TYPE STRING,
KDKG2 TYPE STRING,
KDKG3 TYPE STRING,
KDKG4 TYPE STRING,
KDKG5 TYPE STRING,
VBELN_GRP TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
CCDATBI TYPE STRING,
VALDT TYPE STRING,
VALTG TYPE STRING,
TAXK1 TYPE STRING,
WAKTION TYPE STRING,
GSBER TYPE STRING,
PS_PSP_PNR TYPE STRING,
KOSTL TYPE STRING,
CVVAL TYPE STRING,
CCNAME TYPE STRING,
ABRUF_PART TYPE STRING,
XBLNR TYPE STRING,
SPPAYM TYPE STRING,
SCHEME_GRP TYPE STRING,
MNDID TYPE STRING,
PAY_TYPE TYPE STRING,
SEPON TYPE STRING,
CPD_HNUM_LONG TYPE STRING,
INCOV TYPE STRING,
INCO2_L TYPE STRING,
INCO3_L TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_RFC_HEAD_COMC_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_TDS_RFC_HEAD_COMC_STR-HANDLE sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-AUART sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VKORG sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VTWEG sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-SPART sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VKBUR sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VKGRP sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VBELN sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KUNAG sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KUNWE sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-BSTKD sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-BSTDK sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VDATU sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KETDAT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KPRGBZ sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-DWERK sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-AUGRU sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-LIFSK sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-FAKSK sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-PRSDT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-WAERK sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KURSK_INT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KURSK_EXT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-INCO1 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-INCO2 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-FKDAT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-ZTERM sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-AUTLF sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-AUDAT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-ANGDT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-BNDDT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-GUEBG sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-GUEEN sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VSBED sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-ZLSCH sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-DELCO sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VBEGDAT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VENDDAT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VBEGREG sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VENDREG sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KTEXT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-PLTYP sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KONDA sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-BZIRK sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KDGRP sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-BSARK sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VSART sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-ABLAD sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-EMPST sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_NAME sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_STREET sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_HNUM sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_PCODE sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_CITY sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_COUNTRY sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_LANGU_INT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_LANGU_EXT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KVGR1 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KVGR2 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KVGR3 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KVGR4 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KVGR5 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KDKG1 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KDKG2 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KDKG3 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KDKG4 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KDKG5 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VBELN_GRP sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CCINS sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CCNUM sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CCDATBI sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VALDT sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-VALTG sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-TAXK1 sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-WAKTION sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-GSBER sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-PS_PSP_PNR sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-KOSTL sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CVVAL sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CCNAME sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-ABRUF_PART sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-XBLNR sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-SPPAYM sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-SCHEME_GRP sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-MNDID sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-PAY_TYPE sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-SEPON sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-CPD_HNUM_LONG sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-INCOV sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-INCO2_L sy-vline 
WA_TDS_RFC_HEAD_COMC_STR-INCO3_L sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.